This clue appeared in the NYT Crossword on Wednesday, December 10, 2025 (17 Across). The answer is hidden below until you want it. Wednesday sits mid-week in difficulty, with more wordplay than Monday or Tuesday.
Answer length: 4 squares
First letter
O _ _ _
First and last letters
O _ _ O
Show the answer
About the answer
ONTO as a word: (mathematics, of a function) Attaining each of the values in its codomain; having its image equal to its codomain.
ONTO has been an answer 9 times in the NYT Crossword and Mini since November 2, 2025.
Other clues with the same answer
More clues from this puzzle
- Shoo away, in a way (5 Across)
- Thunderbolt wielder (11 Across)
- First name in daring jumps (15 Across)
- City NE of Olympia (16 Across)
- Emulates a dog around the family dinner table (18 Across)
- Like voice mail messages, for example (19 Across)
- Red "Inside Out" character (21 Across)
- OUT OF ORDER! PAPER TRAY REQUIRES MAINTENANCE! (23 Across)
Play today's NYT Crossword at The New York Times
All crossword clues · Today's NYT Crossword answers · Today's Mini answers